Oil-burner.



J. L. HOFFMAN.

OIL BURNER.

APPLICATION FILED JAN. 25,1912.

1,087,767. Patented Feb. 17,1914

.rosnrirn Herrmann', or NEW naa, onnoon.

Uffa-BURNER.

, specification of Letters Patent.

Patented ree. raisin Application led January 25, 1912.- Serial No. 673,3a1.

To all wzomt may concern: p

Be it known that I, Josnrri L. HOFFMAN, a citizen of the United States,residing in the city of New Era, Clackamas county, and State of Oregon, have invented certain new and useful Improvements in Oil-Burners, of which the following is a specification.

My invention relates to oil burners, and has for its principal object to provide an improved and simplified oil burner, of few parts and of such construction and arrangement that a more thorough mixing and atomizing of the fuel is secured, and there fore a more perfect combustion.

Other objects Will appear from the following description of one embodiment of the invention, reference being had to the aocompanying sheet of drawings illustrating the same, and in which- Figure 1 is a longitudinal. sectional view of one embodiment of the invention; Fig. 2 is a cross sectional view taken on line 2-2, Fig.l l; Fig. 3 is a similar view` taken on line 8-3 of Fig. l; Fig. 4; is a side elevation of the burner, showing method of connection, with a discharge tip disconnected; and

Fig. 5 is a modified form of a mixing membei'.

Referring now to the. drawings, l dcsignates a steam supply pipe, 2 an oil supply pipe, and 3 a member formed as a part of a casing into which pipes l and 2 discharge. The member 3 is constructed, as shown in Fig. l., tio/'receive the end of the steam supply pipe, as indicated at Ai, and also the end of the oil supply pipe 2, at a point interiorly thereof, as indicated at 5, whereby to provide a chamber 6 into which the steam is first discharged. The member, which l will designate as 3', is provided with a series of passageways 7 7 therethrough and leading from the chamber 6, and also with a series of passageways 8-8, in the middle portion thereof, and leading from the oil supply pipe, as indicated. 'lhese passageways are arranged at different angles so that steam and oil, or other fuel discharge therethrough, will collide at an angle in chamber 9, within casing l0, which is screwed on to the member 3, as indicated in Fig. '1. The rear portion ofthe member 3 and the casing 10 together form, in effect, one general casing, with the member 3 interposed as a partition and made of suificient length so that the passage ways therethrough will give dedu "nite direction to the fuel and steam forced as indicated in dotted lines.

therethrough. These passageways are preferably made 1n. spiral form, as indicated by .the dotted curved lines-passageways 7 bev,oil and steam collide in chamber 9 under this forced torsional movement. l also prefer to form these passageways, Whether straight or spiral, with a taper, with the larger or receiving ends leading, respectively, from the oil and steam supply pipes, and the smaller or discharging ends opening into chamber 9. Under this construction f am able to get an increased pressure in the discharge, While l have a comparatively low pressure feed of oil and steam. This is an important feature and secures a most; remarkable commingling and atomizing of the steam and oil, and a more perfect combustion.

ln Fig. 5, l have shown a slightly modified form 3 of the member 3', showing it as a separate member adapted to be inserted 'into the case l0 and againsta shoulder l0', while the part 3 would he screwed. against it. By this construction the member can be removed and interchanged for another of varying construction. In this form l have shown the passageways straight, but at angles with each other, and have also indi cated the taper. Case 10 is reduced at its outer end, as at 12, to receive any kind of discharge tip or nozzle.

Member 3y is provided with a threaded extension 13, with an adjustable disk 14:, with beveled edge 15 adapted to set against or adjacent a correspondingly beveled seat formed on a shoulder 16 in the case 10, said disk being adapted to be adjusted to regulate the outlet or discharge opening from the chamber 9. A holding nut 14e is applied to said extension 13 to more rmly hold said .disk in adjusted positions.

Referring to Fig. 4f, I connect my steam pipes 1-l to an ordinary T, and provide a bushing to receive a smaller pipe for the oil, By extending the steam and oil pipes, one Within the other, for a short distance,`as shown in Fig. 4, be-

Btl)

lldli fore attaching the burner, the steam in the steam pipe serves to heat the oil passing 'through the oil supply pipe, thus putting it other at angles in chamber 9. A further mixing and commingling takes place as the oil and steam are forced around the disk and out into the chamber 17, before passing through the discharge tip or nozzle, of whatever kind it may be.

From the foregoing, it will be seen that I have, in 'the rst place, an extremely simple burner, a burner of very few and simple parts, and a burner which can be easily taken apart and new parts substituted.

While I have shown and described one embodiment of the burner, I am aware that' mounted directly upon the ends of said sup-v ply pipes, a discharging member mounted Within said burner body intermediate its ends and dividing said interior into two chambers, said discharging member having two series of passageways extending longitudinally therethrough, one series of said passageways converging at their discharge ends, and the other series diverging at their discharge ends, the discharge ends of bot-h series being adjacent each other, whereby they discharge in intersecting paths in the outer chamber of said burner, and an adjustable member mounted in the end of said burner body to adjust the discharge opening from said burner.

2. An oil burner comprising in combination, a burner body or casing with chamber therein, a discharging member mounted therein and dividing said chamber into two chambers, said member having a series of passageways extending longitudinally therethrough and converging from the outer part thereof toward the longitudinal center, and a second series 0f passageways extending longitudinally therethrough and diverging from the middle'portion thereof outwardly, the discharge ends of said two series of passageways being adjacent each other `:nd discharging together in intersecting paths, an outer supply pipe connected to said burner body and discharging into one of said chambers, and an inner supply pipe connected into said burner body and to said dischargmember, whereby to discharge directly through said diverging passageways, substantially as shown. A

3. An cil burner of the character referred to comprising in combination two supply pipes disposed one within the other, aburner body mounted directly upon the end of the outer pipe, a discharging member mounted directly upon the end ofthe inner pipe within said burner body and dividing the interior thereof into two chambers, a series of lconverging passageways through said member longitudinally thereof and in communication with said outer pipe, a series of diverging passageways through said member longitudinally thereof and in communication with said inner pipe, the discharge ends of said passageways being adjacent each other and discharging in intersecting paths withinsaid burner, and means in the end of said burner body for regulating the combustion outlet, substantially as referred to.

4. An oil burner comprising in combination, supply pipes arranged one within the other, a cylindrical burner casing mounted upon they outer supply pipe, a discharging member mounted within said casing intermediate its ends and dividing the linterior thereof into two chambers, the inner supply pipe extending to and being connected with said member, said member having therethrough, longitudinally thereof, two series of diverging and converging passageways discharging inv intersecting paths, and an adjustable member for regulating the discharge opening from said burner casing, substantially as described.

5. An oil burner comprising in combination, supply pipes arranged one within ythe other',l a two-part cylindrical burner casing mounted upon theend ofl said outer supply pipe and having a cylindrical discharging member therein dividing it into two chambers, said inner supply pipe extending to and being connected with said inner discharging member, said discharging member having two se'ries of diverging and converging, tapering passageways discharging in intersecting paths longitudinally of said burner casing, and an adjustable disk member in the outer end of said burner casing for regulating the discharging opening therefrom.

6. An oil burner comprising in combination, supply pipes arranged one within Vthe other, a two part burner casing mounted upon the ends of said supply pipes, one part of said casing being mounted upon the end of the outer supply pipe and provided with a reduced cylindrical portion constituting a discharging member', with the inner supply pipe extended to and connected with said member, and the other part of said burner casing detachably mounted over said mem- -ber and connected to said first part and having a regulating device in its outer end to regulate the discharge opening from said burner, said discharging member being provided with a series of long, tapering passageways therethrough for each supply pipe, substantially as described.

7. In an oil burner of the character described, incombination, supply pipes, a

neernev burner casing mounted upon the ends of said pipes and provided in its interior, intermediate its ends, with a cylindrical discharging member having therethrough, eX- tending longitudinally thereof, a series of tapering, diver-ging and converging passageways, discharging at intersecting angles longitudinally of the burner casing, and a threaded extension upon said member carrying a regulating member for closing the discharge opening from said burner easing, substantially as and for the purpose' described.

8. ln an oil burner, the combination with a burner casing, of a discharge member interposed therein and having a plurality of spirally disposed and tapering passageways therethrough longitudinally thereof and spiraled in different directions whereby to discharge at intersecting angles, for the purpose designated.

9. ln an oil burner, the combination with a burner casing, of a discharge member inlterposed therein and having a plurality of tapered passageways therethrough spiraled in different directions and converging, whereby to discharge at intersecting angles, and an adjustable member for regulating the outlet from said burner, substantially as described.

10. 1n an oil burner, the combination with a burner casing, of a discharge member interposed therein and provided with two'series of tapering passageways therethrough arranged at diderent angles longitudinally ltherethrough whereby to discharge in intersecting paths, and an adjustable regulating member mounted in the end of said casing, for the purpose designated.

11. An oil burner comprising in combination, steam supply pipe, an oil supply pipe disposed therein, a casing upon the ends of said pipes, a discharge member interposed within said casing and provided .with series of spirally disposed and tapered passageways therethrough, arranged at an angle to each other, whereby to discharge inv intersecting paths, and means for regulating the discharge opening, substantially as described.

JUSEPH L.' HFFMAN. In presence of J. C. STRENG,

CEAS. H. KOPF. 

